Stored nut moth

Japanese: ツヅリガ(綴蛾) - ツヅリガ（英語表記）stored nut moth

An insect of the Lepidoptera family, Pyralidae. Wings span 1-2cm. Males are small, with a yellow-red band running from the base to the center of the forewing along the middle compartment, and a tiny black spot at the edge of the middle compartment, while females lack the yellow-red part and have a large black mark. They are found throughout Japan, as well as from Asia to Europe, but are more common in warm regions. The larvae are well known as pests of rice and other stored grains. They occur in the kitchens of ordinary homes, but are often found in the storage sheds of farms. One female lays about 150 eggs. The larvae spit silk and initially gather together to eat the mother's corpse or the germ of rice grains, and as they grow, they string many grains together to make a nest, eating the outer layer from the embryo, and eventually eating the whole grain.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

鱗翅目メイガ科の昆虫。翅の開張1～2cm。雄は小型で，前翅の基部から中央部を，中室に沿って黄赤色帯が走り，中室の端に微小な黒点があるが，雌は黄赤色部を欠き，大きな黒紋がある。日本全国のほか，アジアからヨーロッパまで分布するが，温暖地に多い。幼虫は米その他の貯蔵穀物の害虫として有名である。一般家庭の台所にも発生するが，生産農家の貯蔵庫に多発する。1雌の産卵数は150粒くらい。幼虫は糸を吐き，初めは集まって母体の死骸，あるいは米粒の胚芽などを食べ，成長するにつれ，多数の粒をつづって巣をつくり，胚部から外層を食べ，やがて全体を食べつくす。

出典　株式会社平凡社世界大百科事典第２版について　情報

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